Picture frame



FIG. 1 is a front perspective view of a picture frame, showing my new design therefor;

FIG. 2 is a top plan view of my new design for the picture frame illustrated in FIG. 1;

FIG. 3 is a front elevational view of the picture frame illustrated in FIG. 1, the rear being a mirror image thereof;

FIG. 4 is a side view of my new design for the picture frame illustrated in FIG. 1;

FIG. 5 is a front perspective view of an alternate embodiment of my picture frame, showing my new design therefor;

FIG. 6 is a side view of my new design for the picture frame illustrated in FIG. 5;

FIG. 7 is a front perspective view of a third embodiment of my picture frame, showing my new design therefor; and,

FIG. 8 is a side view of my new design for the picture frame illustrated in FIG. 7. 

The ornamental design for a picture frame, as shown and described. 